Merge pull request #32 from Livefyre/version_v4_x

Version v4 x
Multisite registration fix, give higher priority to comments widget for theme support, take out sentry logging for backfill successes
Version bump
Readme update
change priority of comments widget to 11
Change priority back to 99, added comment explaining why
Merge pull request #35 from Livefyre/CS_333

Multisite registration fix, give higher priority to comments widget for ...
Changed debugging messages so they're not the same, restored some multi-site functionality
Fix global post conflict affecting JS not being put on page, remove database flag from logging in livefyre_import to remove warnings
centralized debug statements
Add site id and article id to debug, took out tabs
made spacing consistent
spacing
more spacing
much spacing
take out is-preview from debug
Merge pull request #36 from Livefyre/redding_4672

Fixed JS not being output bug for certain themes, centralized debugging statements
Change target div element to livefyre-comments to avoid unexpected behavior
Hide comment import for sites with no comments
Take out debugging message